UFC 170: Stephen Thompson kicks off main card with first-round TKO of Robert Whittaker

LAS VEGAS — After the prelims card at UFC 170 offered five decisions in six fights, Stephen Thompson quickly put an end to that trend in the first fight on the main card.

The welterweight fired a left-right combination that sent Robert Whittaker to the mat, with Thompson pouncing on him to cause the referee to wave off the first at 3:43 of the first round Saturday at Mandalay Bay Events Center

Thompson (9-1) has now won three straight times in the Octagon. Whittaker (12-4) has now lost two in a row.